Specification BraceletForm : wristband Brand : GOTOTOP BulletPoint1 : 【More Size】O-rings thickness: 0.5 mm/0.6 mm/ 0.7mm 19 different sizes from 12 to 30 mm: 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 and 30 mm. BulletPoint2 : 【Packing with Ploybag】Comes 50 pieces of each size in a ploybag (total: 50 pieces x 19 = 950 pieces) BulletPoint3 : 【Install Way】Rubber gasket set that is installed on the watch back case,can cover the gap between the watch band and movement BulletPoint4 : 【High Quality Material】Made from Rubber for a and long lasting air tight and seal BulletPoint5 : 【Service】 If you have any questions about installation or products, please via Messenger. We will reply to you as soon as possible within 24 hours and give you a satisfactory solution. a satisfactory solution. ClaspType : Push Button Deployant Clasp Collection : Rolex GMT Master Color : Black CompatibleDevices : Watch CompatibleMaterial1 : Metal CompatibleMaterial2 : Aluminum CompatibleMaterial3 : Alloy Steel CompatibleMaterial4 : Stainless Steel CustomerPackageType : FFP Department : mens ExternallyAssignedProductIdentifier1 : 654936748316 ExternallyAssignedProductIdentifier2 : 0654936748316 FinishType : Glossy GemType : no gemstone GpsrSafetyAttestation : 1 GradeRating : Premium ItemForm : Grease ItemHardness : 9H ItemName : 950pcs Watch O Gaskets 12mm30mm Universal Rubber O Watch Back Cover Seal Gaskets (0.5mm) ItemPackageDimensions_Height : 15 centimeters ItemPackageDimensions_Length : 4.3 centimeters ItemPackageDimensions_Width : 13.6 centimeters ItemPackageQuantity : 1 ItemShape : Curved ItemTypeKeyword : watch-repair-tools Lifestyle : Fashion Manufacturer : GOTOTOP Material : Rubber Material1 : Metal Material2 : Aluminum Material3 : Alloy Steel MetalType : Aluminum ModelName : DW5600 Series ModelNumber : Echo-059 NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPieces : 950 OccasionType : All Occasion PartNumber : Echo-059 Pattern : 0.5mm ProductDescription : Feature: This is a set of 950 pieces of new O-rings seals. O-rings thickness: 0.6 mm 19 different sizes from 12 to 30 mm: 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 and 30 mm. Comes 50 pieces of each size in a polybag (total: 50 pieces x 19 = 950 pieces) rubber material, wear-resistant and resistant, This is a rubber o- round watch gasket that keep your watch water resistant Excellent replacements for many of the popular brand watches and non brand watches This is excellent for most watches, especially if you are doing watch battery replacement Gaskets will stretch a couple of millimeters and will also work on watches of shapes other than round